Several people were hospitalised after an incident outside the US National Security Agency's headquarters at Fort Meade, Maryland, on Wednesday, none of the injuries appeared to be from gunfire, said the NSA in a statement. A Fort Meade spokesman confirmed that a main highway was closed near the facility, about 30 miles northeast of Washington. One person was taken into custody following the incident, according to local media reports. The FBI's Baltimore office said it had sent agents...